"use client";

import { useCallback, useEffect, useState } from "react";
import { cn } from "@/lib/utils";
import { Button } from "./button";
import { CookieIcon } from "@radix-ui/react-icons";
import posthog from "posthog-js";

export function cookieConsentGiven() {
  if (!localStorage.getItem("cookie_consent")) {
    return "undecided";
  }
  return localStorage.getItem("cookie_consent");
}

export default function CookieConsent({
  variant = "default",
  demo = false,
  onAcceptCallback = () => {},
  onDeclineCallback = () => {},
}) {
  const [isOpen, setIsOpen] = useState(false);
  const [hide, setHide] = useState(false);
  const [consentGiven, setConsentGiven] = useState("");

  const accept = useCallback(() => {
    setIsOpen(false);
    // eslint-disable-next-line no-restricted-syntax
    document.cookie =
      "cookieConsent=true; expires=Fri, 31 Dec 9999 23:59:59 GMT";

    localStorage.setItem("cookie_consent", "yes");
    setConsentGiven("yes");

    // Dispatch custom event to notify other components
    window.dispatchEvent(new Event("cookie-consent-change"));

    setTimeout(() => {
      setHide(true);
    }, 700);
    onAcceptCallback();
  }, [onAcceptCallback]);

  const decline = useCallback(() => {
    setIsOpen(false);
    localStorage.setItem("cookie_consent", "no");
    setConsentGiven("no");

    // Dispatch custom event to notify other components
    window.dispatchEvent(new Event("cookie-consent-change"));

    setTimeout(() => {
      setHide(true);
    }, 700);
    onDeclineCallback();
  }, [onDeclineCallback]);

  useEffect(() => {
    try {
      setIsOpen(true);

      if (
        document.cookie.includes("cookieConsent=true") ||
        localStorage.getItem("cookie_consent") === "yes"
      ) {
        accept();
      }

      if (
        document.cookie.includes("cookieConsent=true") ||
        localStorage.getItem("cookie_consent") === "no"
      ) {
        if (!demo) {
          setIsOpen(false);
          setTimeout(() => {
            setHide(true);
          }, 700);
        }
      }
    } catch (e) {
      console.error("Error checking cookie consent:", e);
    }
  }, [accept, demo]);

  useEffect(() => {
    const consented = consentGiven === "yes";
    posthog.capture("accept-cookies", { accepted: consented });
  }, [consentGiven]);

  // Default banner
  if (variant === "default") {
    return (
      <div
        className={cn(
          "fixed z-[200] bottom-0 left-0 right-0 sm:left-4 sm:bottom-4 w-full sm:max-w-md duration-700",
          !isOpen
            ? "transition-[opacity,transform] translate-y-8 opacity-0"
            : "transition-[opacity,transform] translate-y-0 opacity-100",
          hide && "hidden",
        )}
      >
        <div className="dark:bg-card bg-background rounded-md m-3 border border-border shadow-lg">
          <div className="grid gap-2">
            <div className="border-b border-border h-14 flex items-center justify-between p-4">
              <h1 className="text-lg font-medium">We use cookies</h1>
              <CookieIcon className="h-[1.2rem] w-[1.2rem]" />
            </div>
            <div className="p-4">
              <p className="text-sm font-normal text-start">
                We use cookies to ensure you get the best experience on our
                website. For more information on how we use cookies, please see
                our cookie policy.
                <br />
                <br />
                <span className="text-xs">
                  By clicking "
                  <span className="font-medium opacity-80">Accept</span>", you
                  agree to our use of cookies.
                </span>
                <br />
                <a
                  href="https://www.iubenda.com/privacy-policy/76608149/cookie-policy"
                  className="text-xs underline"
                >
                  Learn more.
                </a>
              </p>
            </div>
            <div className="flex gap-2 p-4 py-5 border-t border-border dark:bg-background/20">
              <Button onClick={accept} className="w-full">
                Accept
              </Button>
              <Button onClick={decline} className="w-full" variant="secondary">
                Decline
              </Button>
            </div>
          </div>
        </div>
      </div>
    );
  }

  // Small banner variant
  return (
    <div
      className={cn(
        "fixed z-[200] bottom-0 left-0 right-0 sm:left-4 sm:bottom-4 w-full sm:max-w-md duration-700",
        !isOpen
          ? "transition-[opacity,transform] translate-y-8 opacity-0"
          : "transition-[opacity,transform] translate-y-0 opacity-100",
        hide && "hidden",
      )}
    >
      <div className="m-3 dark:bg-card bg-background border border-border rounded-lg">
        <div className="flex items-center justify-between p-3">
          <h1 className="text-lg font-medium">We use cookies</h1>
          <CookieIcon className="h-[1.2rem] w-[1.2rem]" />
        </div>
        <div className="p-3 -mt-2">
          <p className="text-sm text-left text-muted-foreground">
            We use cookies to ensure you get the best experience on our website.
            For more information on how we use cookies, please see our cookie
            policy.
          </p>
        </div>
        <div className="p-3 flex items-center gap-2 mt-2 border-t">
          <Button onClick={accept} className="w-full h-9 rounded-full">
            accept
          </Button>
          <Button
            onClick={decline}
            className="w-full h-9 rounded-full"
            variant="outline"
          >
            decline
          </Button>
        </div>
      </div>
    </div>
  );
}
